Desynchronized audio when demuxing and then remuxing

[andiandi13]

The fewer issues I have to read, the more new features I will have time to implement, so I ask that you please try these things first

• Try with the newest version from GitHub (also it might have already been fixed in latest nightly build)
• Read the documentation and FAQ, Known issues, Troubleshooting
• Search for your problem under Issues or Discussions
• This problem happens with all kinds of files that I try. For problem only with a particular file or type, use this other form instead

Operating System

Windows 10

Steps to reproduce

• Cut+merge a video with multiple segments in lossless cut
• Demux the audio
• Remux it with the video

Expected behavior

The synchronization should remains the same

Actual behavior

When remuxing the audio after demuxing it, it becomes desynchronized (slightly but enough to be noticeable). However, I tested with older versions, and there is no desync after demux-remuxing the audio (or at least it seems very minimal). This issue appears starting from version 3.56.0 (August 24, 2023).

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